I used to bite my nails, and the surrounding skin, so badly that the frequently bled. It was impossible for me to bite them any lower and they looked so awful that I was ashamed of them. When I was 50, it was my DS's wedding and I knew I couldn't have any photos taken where my hands would be visible so, a couple of days beforehand, I had temporary false nails put on. They lasted about 2 weeks and when they came off, my own nails had started to grow quite well, so I had another set of false nails put on. When they were taken off, I had my nails professionally manicured and I've never bitten my nails since then. I wouldn't recommend having false nails for any great length of time but, for me, that 4 weeks gave me the start I needed when everything else had failed.